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You may want to check the egr cooler for leaking coolant. When this leaks it will allow coolant to exit the system VIA the exhaust.

To check the cooler remove the crossover tubing and check for wetness. If it is wet in the cooler it needs to be replaced and the egr/after treatment system cleaned. See pic i added for location toi check. You can check the outlet section too but that would require removing the cooler. Please don't forget to rate my service

Hi, It's Dan. I would also like to add that if no wetness at the exhaust connections is found, look for white ash deposits indicating coolant burning in the exhaust. If found this is also an indication of an EGR cooler leak. Let me know

2014 Cummins ISL Eng Ser.# 73672980. Flat code 3382 is the only code popping up. I cleaned the intake manifold inlet housing and cleaned all the ports including the small sensor ports. What else is th… read more

I own a 2005 class A motorhome with a Cummins 400 ISL motor. It has what appears to be a clear antifreeze, came from Arizona,been tested to -25. I need to add some to get back to res. full line. what … read more

MY NAME IS*****: What is the model/year of your Ford? Customer: I HAVE A 2005 FORD F650 5.9 CUMMINS WITH EGR & AIR BRAKE AND IT IS PUSHING COOLANT OUT COOLANT TANK WHEN YOU ARE PUSHING IT . DOESN'T SE… read more

I have a 2005 Dutch Star 40' Motor Home with a Cummins 370 ISL ENGINE - I have oil in the water. Spartan dealer just installed a new oil cooler. Is my oil cooler water cooled or air cooled? … read more

I have a 2006 Travel Supreme Class A motorhome with a cummins ISL 400 diesel. It recently had the "Stop Engine" light come on but everything was fine. I had another 20 miles to my camp site and everyt… read more

I have a '07 cummins 400 isx. It builds up 25 lbs. plus pressure in the radiator reservoir and it blows antifreeze out. I replaced the air compressor and egr cooler and it still does the same thing. T… read more

I have a '93 Mack Gravel truck with the E7-400 Engine in it. I bought it not running with the dash taken apart. The previous owner past before he could get it running. I towed it home and began the se… read more

I have a 1998 Freightliner FL 120 w/ N 14 ,445 HP, started using coolant, not running hot, and I have good oil pressure. I can see ,what looks like antifreeze around the head gasket on the right side … read more

I have a 1997 international with a cummins engine just recently we had the tempature rise then it started to push antifreeze out the antifreeze reservoir we stopped on the road right away the top hose… read more

I have a Signature 565 (99) - 2.9 million kilometers on it - took it into Cummins to replace injectors (preventative maintenance) - truck will not run properly ever since. Have lost 2 mpg - burning oi… read more

I HAVE A 2007 WINNEBAGO VECTRA WITH A 8.9 CUMMINS ENGINE. IT SHOW ZERO OIL PRESSURE, RUNS OK, DOESN'TOVER HEAT, STILL HAS OIL IN THE CRANK CASE. COULD IT BE THE SENDING UNIT? IF SO, WHERE IS IS LOCATE… read more

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.